 | | Journal (article/letter/editorial) | | High-temperature carbonate minerals in the Stillwater Complex, Montana, USA Hannah M. Aird ā¢ Alan E. Boudreau...platiniferous Johns-Manville (J-M) reef of the Stillwater Complex in a stratigraphic section that has been...serpentinite) that occur locally throughout the complex. The association of high-temperature carbonates...Ocean Sciences, Duke University, Durham, NC 27708, USA e-mail: hannah.aird@duke.edu them at a higher stratigraphic...J-M reef of the Stillwater Complex and the analogous Merensky reef of the Bushveld Complex in South Africa |  | | Report (issue) | | 856(1) Z=4 X-ray Powder Pattern: Stillwater complex, Montana, USA. 0.7874 (100), 0.8623 (80), 0.8847...Rh (1) 59.6 41.7 Total 101.3 (1) Stillwater complex, Montana, USA; by electron microprobe, corresponding...found in heavy mineral concentrates (Stillwater complex, Montana, USA). Association: Platinum, PtāFe alloy...marcasite, violarite, graphite (Stillwater complex, Montana, USA). Distribution: In the USA, from the Stillwater...Stillwater complex, Montana [TL], and at Fox Gulch, Goodnews Bay, Alaska. Name: From the Greek rhodon, rose |  | | Journal (article/letter/editorial) | | the 1Montana College of Mineral Science, Butte, Montana, and the 2 Rockwell International Science Center...California, U.S.A. A Preliminary Description of Complex Graphite, Sulphide, Arsenide, and Platinum Group Element...Mineralization in a Pegrnatoid Pyroxenite of the Stillwater Complex, Montana, U.S.A. A. Volborth 1 and R. M. Housley2...here for the first time a major occurrence of graphite along with sulphide, arsenide, and platinum group...mineralization in the Stillwater Layered Anorthosite Complex, Montana. The graphite occurs in a pegmatoid |  | | Journal (article/letter/editorial) | | Volume 80, pages 1343-1346, 1995 The Stillwater Complex, Montana: A subvolcanicmagmachamber? Rosar-rNo...in the footwall of the Stillwater Complex, all of them coeval with the Stillwater in age.Two of the magma...range of 1.5-3 kbar implies that the depth of the Stillwater magma chamber was similar to that of subvolcanic...Volcano, which raisesthe possibility that the Stillwater magma body may also have been a subvolcanic reservoir...the basis of a limited number of 40o/o of the Complex has (1960) ples, inferred that Hess layeredmafic |  | | Journal (article/letter/editorial) | | isochemicalāāiso-isotopicā reactions of calcite + quartz to form graphite + wollastonite. In many deposits, carbonās structure...structure attains well-ordered, nearly perfect graphite crystallinity. The carbon isotope composition of...mantle carbon as measured in diamonds. KEYWORDS : graphite, hydrothermal ore deposits, carbon isotopes INTRODUCTION...INTRODUCTION Among geochemists and petrologists, graphite has a reputation as a refractory mineral. As heating...matter is converted to well-crystallized graphite. Graphite persists as a stable mineral to the highest |  | | Report (issue) | | from the lowermost cyclic unit of the Stillwater Complex, Montana by Patricia J. Loferski,!/ Sol Berman...zone in the Mountain View area of the Stillwater complex, Montana. These data will be used in various forms...deposits in the Stillwater complex. Location and General Geology The Stillwater complex is a layered mafic...Beartooth Mountains in south-central Montana (fig. 1). The age of the complex has been determined at 2701+8...Paleozoic and Mesozoic sedimentary rocks. The complex consists of generally concordant layers of rocks |  | | Journal (article/letter/editorial) | | Distribution in the Stillwater Complex and Evolution of Vapor During Crystallization of Stillwater and Bushveld...occurrence and distribution of carbon in the Stillwater Complex have been investigated. In mineralized troctolite... The assemblage forsterite-antigorite-calcite-graphite and the petrographic relations indicate equilibration...is good evidence for magmatic graphite in parts of the Bushveld Complex. The C-O-H-Cl system has been...been investigated for conditions of Stillwater and Bushveld crystallization. In alkali-poor fluids over a |  | Czamanske, Gerald K., Bennett, Pauline C., Zientek, Michael L., Weiblen, Paul W., Havach, George A., Foose, Michael P. (1986) Comprehensive bibliographies on mineralized and unmineralized layer mafic intrusions in the United States. Open-File Report Vol. 1986 (86-589) US Geological Survey doi:10.3133/ofr86589a | Report (issue) | | potential. The Duluth Complex, Minnesota, and the Stillwater Complex, Montana, are given separate status...United States. The bibliography on the Duluth Complex and related Keweenawan intrusions includes all...Geology, 1951-1980." Many students of the Duluth Complex currently view it in the context of related intrusive...bibliography on the Stillwater Complex is an update of the comprehensive bibliography in Montana Bureau of Mines...Special Publication 92, entitled "The Stillwater Complex, Montana: Geology and Guide." The bibliography |  | Braun, Kristen, Meurer, William, Boudreau, Alan E., McCallum, I.S. (1994) Compositions of pegmatoids beneath the J-M Reef of the Stillwater Complex, Montana, U.S.A. Chemical Geology, 113 (3) 245-257 doi:10.1016/0009-2541(94)90069-8 | Journal (article/letter/editorial) | | pegmatoids beneath the J-M Reef of the Stillwater Complex, Montana, U.S.A. Kristen Braun a, William Meurer...aGeology Department, Duke University, Durham, NC 27706, USA bDepartment of Geological Sciences, A J-20, University...University of Washington, Seattle, WA 98195, USA (Received September 12, 1992; revised and accepted August...of the platiniferous J-M Reef of the Sfillwater Complex, but are less common in Norite zone II and Gabbronorite...on the discordant pegmatoidal rocks of the Stillwater Complex. These rocks are of interest not only for |  | | Journal (article/letter/editorial) | | University, Department of Geology , Durham, NC, 27706, USA Published online: 09 May 2007. To cite this article:...University, Department of Geology, Durham, NC 27706, USA. Potholes that develop in layered intrusions show...INTRODUCTION Potholes that have developed in the Stillwater and Bushveld intrusions are transgressive, funnel-shaped...Bushveld Complex (the Merensky Reef and the UG2 chromitite layer) and the Stillwater Complex (the J-M...Merensky potholes, they locally contain abundant graphite. In this paper, the term liquid is used to denote |  | | Report (issue) | | Custer and Gallatin National Forests, South-Central Montana compiled by Bradley S. Van Gosen1 Open-File Report...................................... 5 I. Stillwater Complex ........................................................... 32 III. Goose Lake intrusive complex ............................... 35 IV. Absaroka-Gallatin...Absaroka-Beartooth study area in south-central Montana ... 4 INTRODUCTION This bibliography lists more...Mountains and Absaroka Range in south-central Montana. It was compiled during an evaluation of the mineral |  | | Journal (article/letter/editorial) | | 10024, USA bLamont-Doherty Earth Observatory at Columbia University, Palisades, NY 10964, USA CFaculty...compositions but absent in the synthetic ones might complex with Ir in the silicate melt and enhance its solubility...Barium carbonate pressure medium Graphite heater MgO spacer Graphite sample capsule Silicate + s u l f...f i d e A l u m i n a sleeve MgO spacer Graphite wafer I i 1/2 inch Experimental Sample Assembly...was used as the pressure medium and encloses the graphite furnace and sample assembly. The pressure correction |  | | Journal (article/letter/editorial) | | petrological significance of graphite in the Upper Critical Zone, western Bushveld Complex, South Africa Christian... 1984 Revised version accepted March 2, 1985 Graphite occurs as a major rock-forming constituent in...minerals (RhAsS-lrAsS). Locally, rocks with up to 80% graphite occur. Chlorine is a significant constituent in...in both, hydrous silicates (0.1-0.3% C1) and graphite (0.2-1.9%). Magnetite and quartz also occur with...(500-600Ā°C) and fo2 (10-21 to 10 -23 bar) during graphite deposition, which took place from C - O - H - |  | | Journal (article/letter/editorial) | | migration in the Middle Banded series of the Stillwater Complex, Montana W.P. Meurer ) , C.C. Willmore, A.E. Boudreau...27708, USA Abstract Olivine-bearing zones III and IV ŽOB-III and -IV. of the Stillwater Complex, MT preserve...reserved. Keywords: Cumulate; Ore deposit; Stillwater Complex; Fluid; Chromatographic separation 1. Introduction...the platiniferous JāM and Merensky reefs of the Stillwater and Bushveld Complexes, respectively. It has...Kruger, 1990; Boudreau, 1993, 1995.. Fig. 1. Stillwater complex location map with stratigraphic divisions |  | | Report (issue) | | Sulfur Isotopic Studies of the Stillwater Complex and Associated Rocks, Montana Michael L. Zientek1 and Edward...Bloomington, IN 47405 ABSTRACT The Stillwater Complex, in south-central Montana, is a Late Archean layered,...rocks, Stillwater-associated sills and dikes, sulfide accumulations near the base of the complex, and platinum-group...iron-formation, Stillwater-associated sills and dikes, and basal sulfide accumulations in the complex (mean -0...occur above the basal accumulations in the Stillwater Complex (mean 1.2 per mil). The isotopic composition |  | | Journal (article/letter/editorial) | | CA 94305, USA āMolecular Physics Laboratory, SRI International, Menlo Park, CA 94025, USA 3Department...NY 10024, USA āCenter for Materials Research, Stanford Unive~ity, Stanford, CA 94305. USA (Receiwd h4u...Jagersfontein kimberlite, and in gabbros from the Stillwater and Bushveld Complexes has been studied by X-ray...it is commonly referred to, was suggested to be graphite, carbynes, or perhaps organic material. Later...led Mathez to suggest that the particles were graphite intercalation compounds. X-ray photoelectron spectroscopic |  | Page, N. J., Myers, J. S., Haffty, Joseph, Simon, F. O., Aruscavage, P. J. (1980) Platinum, palladium, and rhodium in the Fiskenaesset Complex, southwestern Greenland. Economic Geology, 75 (6) 907-915 doi:10.2113/gsecongeo.75.6.907 | Journal (article/letter/editorial) | | Platinum, Palladium, and Rhodium in the Fiskenaesset Complex,Southwestern Greenland NORMAN J PAGE, U.S. Geolo...Pt, Pd, and Rh in comparisonwith the Stillwater Complex,Montana,but variationsin theseconcentrations...stratiform mafic intrusionssuch as the Bushveld and Stillwater Complexes and the Great Dyke; usuallythe highestconcentrations...relative to the stratigraphic sequence of the complex. Initial analysesby the fire-assay spectrochemical...metamorphism(Ghisler, 1966, General Geology oÅthe Fiskenaesset Complex The Fiskenaessetcomplexis a layeredsheet,500 1970 |  | | Journal (article/letter/editorial) | | (Merensky Reef, Bushveld complex; Great Dike, Zimbabwe; J-M reef, Stillwater complex; and others). Platinum...presence of native copper, iron, primary igneous graphite [25], potassium sulfides (djerfisherite), and...average composition of Merensky Reef, Busheveld complex [14]; 2) artificial mixture of Opx-p v - An(A,...Pn + Cp), 7) Pt-Pd-Rh-Ir-Ru-Au alloy, 8) glass-graphite crucible, 9) tungsten vessel, 15 mm diam. FIGURE...Stratiform bodies (Sudbury, Bushveld complex, Great Dike of Rhodesia, Stillwater), chromitites (1) [8, 12, 15 |  | Aird, Hannah M., Ferguson, Katherine M., Lehrer, Malia L., Boudreau, Alan E. (2017) A study of the trace sulfide mineral assemblages in the Stillwater Complex, Montana, USA. Mineralium Deposita, 52 (3) 361-382 doi:10.1007/s00126-016-0664-x | Journal (article/letter/editorial) | | sulfide mineral assemblages in the Stillwater Complex, Montana, USA Hannah M. Aird 1,2 & Katherine M.... Abstract The sulfide assemblages of the Stillwater Complex away from the well-studied ore zones are...Ocean Sciences, Duke University, Durham, NC 27708, USA 2 Department of Geological and Environmental Sciences...California State University Chico, Chico, CA 95929, USA Ni in the Peridotite Zone is largely controlled...the J-M reef. Keywords Magmatic sulfides . Stillwater Complex . Accessory mineral assemblages . Hydromagmatic |  | | Journal (article/letter/editorial) | | from the Middle Banded series of the Stillwater Complex, Montana Received: 5 October 1995 y Accepted:...OB-IV) of the Middle Banded series of the Stillwater complex, occurring interstitial to cumulus grains...Duke University, Box 90227, Durham, NC 27708-0227, USA Editorial responsibility: T.L. Grove Introduction...concentration of platinum group elements in the Stillwater and Bushveld intrusions (Ballhaus and Stumpfl...zones III and IV (OB-III and OB-IV) of the Stillwater complex revealed no stratigraphic or lateral variation |  | Elliott, W. C., Grandstaff, D. E., Ulmer, G. C., Buntin, T., Gold, D. P. (1982) An intrinsic oxygen fugacity study of platinum-carbon associations in layered intrusions. Economic Geology, 77 (6) 1493-1510 doi:10.2113/gsecongeo.77.6.1493 | Journal (article/letter/editorial) | | Bushveldmay havebeenoriginallyoperativefor the Stillwater as well. Introduction THE highconcentrations...zoneof interest(ZOI, Conn, 1979)ā¢ of the Stillwater Complex (Montana) are geochemical and petrogenetic enigmas...many similaritiesbetweenthe Bushveld and the Stillwater Complexes,we studied the Stillwaterzoneof interestin...al. sulfideat fsā¢ valuesaslow as10-2. Primary graphite has been reported in the Mer- (1976) reviewed...techniqueand shall commun., 1978). Furthermore, graphite-bearing insteadconcentrateon the critical factorsnecessary |  | | Journal (article/letter/editorial) | | Reef in the Rustenburg section of the Bushveld Complex D . M . Nicholson i * and E.A. M a t h e z 2 1...98195 USA 2 Department of Mineral Sciences,AmericanMuseum of Natural History,New York, NY 10024 USA Received...Reef in the Rustenburg section of the Bushveld Complex has been developed based on detailed field and...address: 2756 NE 103rd St., Seattle, WA 98125, USA O f f p r i n t requests to ." E.A. Mathez Hydration...Introduction The Merensky Reef of the Bushveld Complex is a stratiform horizon of dominantly pegmatoidal |  | | Report (issue) | | 99201 2U.S. Geological Survey, Tucson, AZ 85705, USA 1990 5/14/91 TABLE OF CONTENTS Executive Summary................. 76 Pre - Tertiary accretionary complex........................................... 7 6...Kalimantan. Figure 8. Back-scattered electron image of complex intergrowth of PGM minerals from S. Pedohon, Tabang...PGE diagram for analyses of chromitite, Tulameen Complex. 5/14/91 LIST OF TABLES Table 1. Summary of...to: i. Flame atomic absorption determination ii. Graphite furnace (flameless atomic absorption determination) |  | Christopher Jenkins, M., Mungall, James E., Zientek, Michael L., Holick, Paul, Butak, Kevin (2020) The Nature and Composition of the J-M Reef, Stillwater Complex, Montana, USA. Economic Geology, 115 (8). 1799-1826 doi:10.5382/econgeo.4777 | Journal (article/letter/editorial) | | Nature and Composition of the J-M Reef, Stillwater Complex, Montana, USA M. Christopher Jenkins,1,2,ā James...Washington 99201, USA 3Stillwater Mine, Sibanye-Stillwater, 2562 Nye Rd., Nye, Montana 59061, USA Abstract...mineralization in the J-M reef horizon of the Stillwater Complex along the strike and down the dip of the...the deposit in the area of the Stillwater mine. We compare these results with data from the East Boulder...collected along the entire strike length of the complex. We find significant variation in the composition |  | | Journal (article/letter/editorial) | | driving mechanism for mineralization processes. Complex PGE associations, including a significant relationship...Layered igneous complexes such as Bushveld and Stillwater, have, for a long time, been the principal source...Colombia, Russia, British Columbia (Canada) and Alaska (USA). Recently, many unconventional PGE accumulations...reported from marine black shales of China, Canada, USA, Czech R e p u b lic, Finland, Poland and the former...1991 a). Metal-rich black shales from the USA In central USA, anomalous values for PGE are known from |
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